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(No Model.) l 2 Sheets-Shet -1.

- F. DIETZ.

TUBULAR LANTBRN.

No. 373,056. Patented Nov. 15, 1887;

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2 Sheets-Sheet 2..

(No Mdel.)

P. DIETZ.

TUBULAR LANTERN.

N0. 373,056. Patented Nov. 15, 1887.

N. PETERS, Pmvuxhngnphnr. wnhingtm D, C.

UNITED STATES ATnNr Omron.

FREDERICK DIETZ, OF NEW YORK, N. Y.,ASSIGNO R TO THEl R. E. DIETZCOMPANY, OF SAME PLACE.

TUBULAR LANTERN.

SPECIFICATION forming part of Letters Patent No. 373,056, datedNovemberl5, 1887.

Application filed May 18,1887. Serial No. 238,580. (No model.)

To all whom it may concern.-

Be it known that I, FREDERICK DIETZ, of NewYork city, county, and Stateof New York, have invented certain new and useful Improvements inTubular Lanterns, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings,and to-theletters of reference marked thereon.

My invention has relation to tubular lanterns or lamps, and especiallyto those whereof the globe is made vertically movable or adjustable, soas to expose the burner for lighting, extinguishing, trimming, cleaning,Src.

The object of my invention is to provide a simple, compact, convenient,and efficient means for elevating the globe and holding it in elevatedposition, which means will also oper ate as a safety-lock forsecuringthe globe in its proper working position against accidentaldisarrangement, and which will not be liable to become damaged duringordinary use of the lantern or lamp, or'subjected to unnecessary Wear.To accomplish all of this my improvements involve certain new and usefulpeculiarities of construction and relative arrangements or combinationsof parts, as will be herein iii-st fully described, and then pointed outin the claims. v

In the accompanying drawings, forming part of this specification, Figurel is a front elevation of a tubular lantern having my improved globelifter, holder, and lock applied thereon in accordance with myinvention, the globe being shown as locked down or in working position,so as to hold the cone and burner in proper place. Fig. 2 is a partialsection and elevation upon a plane at right angles to that of Fig. 1,and passing through the spring holder and lock, the globe being in sameposition as in Fig. l., Fig. 3 is a view similar to Fig. 2,-but showingthe globe in elevated position. Fig. 4 is a plan view of the under sideof the dome, showing one manner of securing the hinged thumb-piece andlifter, so that it will maintain a proper position with respect to thespring holder and lock. Fig. 5` is a partial section and elevation, likeFig. 2, but

upon anpincreased scale.

A represents the globe; B B, the side tubes; C, the central air-tubecommunicating with the side tubes; D, the dome over the globe; E, theperforated bottom plate connected and made movable with the globe, andF. the burnerfcone, upon which the perforated bottom plate rests whenthe globe is down to working position, holding the cone and burner in 6oplace.

Two side guide-wires, G G, are connected with the dome D and extend downto the perforated bottoni plate, E, having loops orhooks g g at theirlower ends, which enter eyes e e, formed in the marginal stiffening-wireapplied to the bottom plate or otherwise connected with said plate, theobject being to connect the bottom plate with the dome and to-providehinges on which the bottom plate may turn, so 7c that the globe may beeasily detached and inserted, if required. A spring, f, connected withthe dome presses upon the upper part of the globe and holds the latterto its seat on the perforated bottom plate, except when the spring iselevated, at which time the globe may be detached, as will be readilyunderstood.

At some point near the top of the structure, as upon the horizontalconnection between the central and side tubes, I firmly secure the end8o of my spring holder and lock H. This holder and lock is preferablymade of dat metal, the better to resist horizontal strains; but it maybe made of round metal, if desired. It passes through a slot cut for itin the dome, and is bent at the lower end, as at h, and at such' a pointthat when the globe is down to its final position the bent portion willspring out and over the upper surface of the margin of the slot in thedome, thereby locking the dome, and 9o through it the globe,bottomplate, burner-cone, and burner, all in proper place.

I is the lifter or thumb-piece applied upon the dome. It is hinged ormade movable thereon,in the example shown passing through the dome, theends being bent on the under side to prevent its displacement. One end,as t', is bent back far enough or made long enough so that it willprevent the lifter fromfalling too `far away from the spring lock andholder when :oo

not required for use. The lifter is mounted in front of the spring lockand holder, and in such relation thereto that when pulled upwardly itwill bear against the spring, pushing or crowding the latter backsufficiently to release the lock or bent end thereof, and the furtherlifting or pulling upwardly will elevate the dome and globe, as will bereadily uuderstood. As soon as the thumb-piece is released the springpresses against the margin of the slot in the dome, causing sufficientfriction to hold the dome and globe in elevated position. To read j ustthe globe, all that is necessary is to press down upon the dome. It willbe observed that the spring is not movable up and down, and does notextend above the horizontal air-pipe connections. The thumb-piece orlifter is short, and also does not extend above the horizontal air-pipeconnections.

The operator has only to place the finger upon the top of the lanternstructure and the thumb beneath thelifter, (or the reverse,`) and move011e toward the other, the top of the structure affording a rigid pointof bearing. The side wires, G G, pass through loops, as b b, upon thestationary tubes B B, wherein the wires are guided. Heretofore theseside wires have been bent so as to press hard against the loops,producing friction for holding theglobe up and renderiugit difficulttoremove theglobe.

A lifter has heretofore been applied to the dome, and made of suchlength as to project beyond the top ofthe lantern, where it is exposedto being bent by reason of the lantern falling or by reason of otheraccident, and especially by use in lifting or depressing the globe, andit often becomes broken off. XVhen bent, it does not work freely orproperly in the guide provided for it, frequently permits the globe tomove down of its own weight after it has been once raised, and fails toguide the globe accurately to its proper seating.

My improved spring lock and holder might be released by other means thanby the lifter; but the lifter is a valuable adjunct, and it is preferredto hinge it so that it will release the spring lock and holder, as aboveexplained. |The side wires and central air-pipe guide the dome, and thusthe top of the globe, accurately in all its movements, and the spring isnot exposed to being broken.

I make no claim herein to the before-mentioned previous forms ofconstruction; but,

Having now fully described my invention, what I do claim as new, anddesire to secure by Letters Patent, is

l. In a tubular lantern or lamp, the combination, with the globe,slotted dome, bottom plate, and connecting side wires, of the springlock and holder secured at its upper end to the upper part of thestructure, passing through a slot in the dome, and arranged to bear uponsaid dome, substantially in the mannerand for the purposes set forth.

2. In a tubular lantern or lamp, the combination of the spring lock andholder secured at its upper end to the upper part of the structure, themovable slotted dome and the globe connected therewith, and thehingedlifter arranged to bear against and release the spring lock and holder,substantially as shown and described.

In testimony that I claim the foregoing I have hereunto set my hand inthe presence of two witnesses.

FREDERICK DIETZ.

fitnessesz JOHN BUCKLER, WORTH Osooon.

